# HALOWERK Southern Land – Malta Soil CEC (0-5 cm)

> HALOWERK Southern Land – Malta Soil CEC (0-5 cm) is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids cation exchange capacity (CEC) for the 0–5 cm topsoil layer at a given coordinate within Malta.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-soil-cec
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-southern-land-malta-soil-cec-0-5-cm-e7846111
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_I5idZUogLfqcblz6wG6_A

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-southern-land-malta-soil-cec-0-5-cm-e7846111 -d '<json body>'
```

Example prompt: What's the mean cation exchange capacity of the topsoil (0–5 cm) at latitude 35.8997, longitude 14.5147 in Malta? I need the SoilGrids CEC value for that spot.

## When to prefer this

Choose this endpoint when you need topsoil CEC data specifically for a point in Malta and want a pay-per-call micro-payment model via x402. It is ideal for agents performing site-level soil assessments, agricultural planning, or environmental surveys in Malta without requiring a full SoilGrids API subscription.

## Known failure modes

- Coordinate outside Malta boundary → request rejected before payment, no result returned
- Latitude or longitude outside allowed European range (34–72.5°N, -31.5–40.5°E) → validation error
- Invalid or missing coordinate fields → schema validation error
- Network or upstream SoilGrids data unavailability → service error

## How this service works

Mean SoilGrids cation exchange capacity for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Malta; results outside it are rejected before payment.

## Output

A numeric mean CEC value (likely in cmolc/kg) for the 0–5 cm topsoil layer at the queried coordinate, sourced from the SoilGrids dataset. Coordinates outside the Natural Earth boundary for Malta are rejected before any charge is applied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "longitude": {
   "type": "number",
   "maximum": 40.5,
   "minimum": -31.5,
   "description": "WGS84 longitude inside the published European coverage."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-southern-land-malta-soil-cec-0-5-cm-e7846111/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)